Documentation

Sandboxed Python interpreter for Dart and Flutter. Run Python from native, web, and mobile — one package, every platform.

Looking for a quick taste? Try the live REPL or the agent demo. For the API at a glance, see User Guide → API Reference.

User Guide

Practical, task-oriented docs for adding dart_monty to a project.

• Installation — Add to your pubspec.yaml
• Deployment — Native and web deployment notes
• REPL — Stateful interactive execution
• Extensions — Template, MessageBus, Sandbox
• API Reference — Method-by-method summary

Tutorials

Walkthroughs that build something real, step by step.

• Host Functions Intro
• Host Functions Beginner
• Host Functions Intermediate
• Host Functions Advanced
• Bridge Middleware
• LLM Prompt Rules

Deep Dives

How the package works under the hood.

• Architecture Overview
• Sandbox Architecture
• OsCall / VFS Layer
• Error Hierarchy
• Extension System
• Bridge Concurrency

Technical Reference

Source-of-truth references for the internal contract surface.

• Native Crate (Rust)
• Monty Rust API
• FFI Handle Lifecycle
• Bridge Integration
• Internals
• API Coverage Plan

Contributing

• Development Setup
• Testing

For LLMs

A machine-readable index of this site is available at /llms.txt — see llmstxt.org for the spec.

Source

Source lives at github.com/runyaga/dart_monty. The companion package dart_monty_core ships the low-level FFI/WASM bindings.